Visualization and Numerical Analysis of Non-evaporating Spray with a Swirl-Type GDI Injector

GDI 와류 분사노즐에 의한 비증발 분무의 가시화 및 수치해석

  • Published : 2003.07.01

Abstract

Predictions of the fuel spray dispersion and mixing processes are very important to improve the fuel consumption and exhaust emissions in GDI engines. Numerical and experimental analysis of the sprays with a swirl injector have been conducted. A numerical analysis is carried out using KIVA-II code with modified spray models. Experimental measurements are performed to show the global spray images and the local images near nozzle tip using laser sheet visualization technique. Computed and measured spray characteristics such as spray width, tip penetration are compared, and good agreements can be achieved. The spray head vortex is stronger as the injection pressure increases, but numerical calculations cannot show the head vortex properly.

Keywords

References

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